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Powder Fluidity Indicator

Definition of the Variables and Calculation of the Results

Preliminary remark:
The spraying factor Rm is a relative value for the evaluation of powders used for dry fluxing – especially when the material transport in the used equipment depends on the fluidization property of the powder.Expansion factor:

Expansion factor [cm/cm] = Hfluid [cm] / H0 [cm]

For the calculation of the expansion factor, the mean values for Hfluid and H0 are used. The data for the mean values results from measurements of the powder height at 5 points.